Two flat rings each having outer diameter of 6 inches and inner diameter of 3 inches are parallel and 4 inches apart as shown. Determine the shape factors, F1-2 and F2-1, which are equal.
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Semiconductor elements are "doped" in order to
A. make them less susceptible to temperature changes. B. make them electrically charged. C. eliminate the possibility of incomplete bonds. D. increase their electrical conductivity.
A 5kg rock and a 10kg rock are dropped from a height of 10m. Which of the following statements describes what happens to the potential energy of the rocks?
a) Neither rock loses potential energy because no work is done on the rocks. b) Bother rocks lose the same amount of potential energy because they fall from the same height. c) The 10kg rock loses more potential energy than the 5kg rock because the 10kg rock falls faster. d) The 10kg rock loses more potential energy than the 5kg rock because the 10kg rock has more mass.
The planet that most resembles Earth is ______________
Fill in the blank(s) with correct word
Tripling the aperture diameter of a camera lens will change the light intensity admitted to the film by what factor?
a. 0.11 b. 0.33 c. 3.0 d. 9.0 e. 12.0